package com.channel.modules.system.service.Impl;

import com.channel.modules.system.domain.Job;
import com.channel.modules.system.repository.JobRepository;
import com.channel.modules.system.repository.UserRepository;
import com.channel.modules.system.service.JobService;
import com.channel.modules.system.service.dto.JobDto;
import com.channel.modules.system.service.dto.JobQueryCriteria;
import com.channel.modules.system.service.mapstruct.JobMapper;
import com.commons.exception.BadRequestException;
import com.commons.exception.EntityExistException;
import com.commons.utils.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CacheConfig;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.*;

@Service
@CacheConfig(cacheNames = "job")
public class JobServiceImpl implements JobService {

    private final JobRepository jobRepository;
    private final JobMapper jobMapper;
    private final RedisUtils redisUtils;
    private final UserRepository userRepository;

    @Autowired
    public JobServiceImpl(JobRepository jobRepository, JobMapper jobMapper, RedisUtils redisUtils, UserRepository userRepository) {
        this.jobRepository = jobRepository;
        this.jobMapper = jobMapper;
        this.redisUtils = redisUtils;
        this.userRepository = userRepository;
    }

    @Override
    @Cacheable(key = "'id:' + #p0")
    public JobDto findById(Long id) {
        Job job = jobRepository.findById(id).orElseGet(Job::new);
        ValidationUtil.isNull(job.getId(),"Job","id",id);
        return jobMapper.toDto(job);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void create(Job resources) {
        Job job = jobRepository.findByName(resources.getName());
        if(job!=null){
            throw new EntityExistException(Job.class,"name",resources.getName());
        }
        jobRepository.save(resources);
    }

    @Override
    @CacheEvict(key="'id:'+#p0.id")
    @Transactional(rollbackFor = Exception.class)
    public void update(Job resources) {
        Job job = jobRepository.findById(resources.getId()).orElseGet(Job::new);
        Job old = jobRepository.findByName(resources.getName());
        if(old != null && !old.getId().equals(resources.getId())){
            throw new EntityExistException(Job.class,"name",resources.getName());
        }
        ValidationUtil.isNull( job.getId(),"Job","id",resources.getId());
        resources.setId(job.getId());
        jobRepository.save(resources);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void delete(Set<Long> ids) {
        jobRepository.deleteAllByIdIn(ids);
        redisUtils.delByKeys(CacheKey.JOB_ID,ids);
    }

    @Override
    public PageResult<JobDto> queryAll(JobQueryCriteria criteria, Pageable pageable) {
        Page<Job> page = jobRepository.findAll((root, criteriaQuery, criteriaBuilder) -> QueryHelp.getPredicate(root, criteria, criteriaBuilder), pageable);
        return PageUtil.toPage(page.map(jobMapper::toDto).getContent(),page.getTotalElements());
    }

    @Override
    public List<JobDto> queryAll(JobQueryCriteria criteria) {
        List<Job> list = jobRepository.findAll((root, criteriaQuery, criteriaBuilder) -> QueryHelp.getPredicate(root, criteria, criteriaBuilder));
        return jobMapper.toDto(list);
    }

    @Override
    public void download(List<JobDto> jobDtos, HttpServletResponse response) throws IOException {
        List<Map<String,Object>> list=new ArrayList<>();
        for(JobDto jobDto : jobDtos){
            Map<String, Object> map = new LinkedHashMap<>();
            map.put("岗位名称",jobDto.getName());
            map.put("岗位状态",jobDto.getEnabled()?"启用":"停用");
            map.put("创建时间",jobDto.getCreateTime());
        }
        FileUtil.downloadExcel(list,response);
    }

    @Override
    public void verification(Set<Long> ids) {
        if(userRepository.countByJobs(ids)>0){
            throw new BadRequestException("所选的岗位存在用户关联，请解除关联后再试！");
        }
    }
}
